Re: How do I replace select ... into commands?

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От Richard Sydney-Smith
Тема Re: How do I replace select ... into commands?
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Msg-id 002f01c378eb$b3fdaca0$df6c32d2@athlon2000
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Ответ на Re: How do I replace select ... into commands?  (Stephan Szabo <sszabo@megazone.bigpanda.com>)
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Thanks that fixed it.
.... the more I use it the happier I get with postgresql.

Best Regards
Richard
----- Original Message -----
From: "Tom Lane" <tgl@sss.pgh.pa.us>
To: "Richard Sydney-Smith" <richard@ibisaustralia.com>
Cc: "Stephan Szabo" <sszabo@megazone.bigpanda.com>;
<pgsql-sql@postgresql.org>
Sent: Friday, September 12, 2003 11:20 AM
Subject: Re: [SQL] How do I replace select ... into commands?


> "Richard Sydney-Smith" <richard@ibisaustralia.com> writes:
> >       execute ''select max('' || seq_fld || '') into mx from '' || tbl;
>
> You can't use INTO in an EXECUTE'd select (basically because the string
> to be executed is not processed by plpgsql at all, merely sent down to
> the SQL engine, which does not know the output variable mx).  The way to
> get results out of an executed select is to use FOR ... IN EXECUTE.
> Which is a kluge, but it holds the fort until someone gets around to
> redesigning this code.  See the manual.
>
> regards, tom lane
>
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